Claude Opus 4.5 vs Gemma 3 270M
Wins 4 of 5 areas
Coding · Reasoning · Long documents · Following instructions
Wins 1 of 5 areas
Facts
Claude Opus 4.5 is the stronger all-rounder.Gemma 3 270M is better at facts.
Scores updated · 13 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- ReasoningHard problems that need careful thinking30Claude Opus 4.53 of 3 tests
- CodingWriting and fixing software20Claude Opus 4.52 of 2 tests
- Long documentsFinding answers in very long texts10Claude Opus 4.51 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Opus 4.51 of 1 test
- FactsGetting facts right instead of making them up01Gemma 3 270M1 of 1 test
Facts, long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Claude Opus 4.5 pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+64.2points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+45.9points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+26.5points ahead
Where Gemma 3 270M pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+30.6points ahead
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.5
- SciCodeClaude Opus 4.5 by 49.549.50+49.5
- Terminal-Bench HardClaude Opus 4.5 by 47470+47
ReasoningClaude Opus 4.5
- GPQA DiamondClaude Opus 4.5 by 64.286.622.4+64.2
- Humanity's Last ExamClaude Opus 4.5 by 26.530.13.6+26.5
- CritPtClaude Opus 4.5 by 4.64.60+4.6
FactsGemma 3 270M
- AA-Omniscience · Non-hallucinationGemma 3 270M by 30.63969.6+30.6
Following instructionsClaude Opus 4.5
- IFBenchClaude Opus 4.5 by 45.95812.1+45.9
Other results5 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- τ²-Bench Telecom (AA run)Claude Opus 4.5 by 80.489.59.1+80.4
- AA Agentic IndexClaude Opus 4.5 by 56.659.63+56.6
- Artificial Analysis Coding IndexClaude Opus 4.5 by 47.847.80+47.8
- AA-OmniscienceClaude Opus 4.5 by 43.314-29.3+43.3
- AA IntelligenceClaude Opus 4.5 by 2429.15.1+24
Questions people ask
Which is better, Claude Opus 4.5 or Gemma 3 270M?
Claude Opus 4.5 wins four of the five areas where both have results: coding, reasoning, long documents and following instructions. Gemma 3 270M wins facts.
Which is better for coding?
Claude Opus 4.5. It wins 2 of the 2 coding tests both models report; Gemma 3 270M wins none.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 8 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 5 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.